Home / 7,879.28-10,869.29-4,690.36

Finding the Fourth Proportional to 7,879.28, 10,869.29 and 4,690.36

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Solution

The fourth proportional to 7,879.28, 10,869.29 and 4,690.36 is: 6,470.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.28 : 10,869.29 = 4,690.36 : x
  2. Step 2: Convert to fraction form
    7,879.28/10,869.29 = 4,690.36/x
  3. Step 3: Cross multiply
    7,879.28x = 10,869.29 × 4,690.36
  4. Step 4: Simplify right side
    7,879.28x = 50,980,829.63
  5. Step 5: Solve for x
    x = 50,980,829.63/7,879.28
  6. Step 6: Final answer
    x = 6,470.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.